import Vue from "vue";
import VueRouter from "vue-router";

// 导入vue模块
import Login from "../components/Login.vue";
import Home from "../components/Home.vue";

import Welcome from "../components/Welcome.vue";
import Users from "../components/Users/Users.vue";
import Roles from "../components/Rights/Roles.vue";
import Rights from "../components/Rights/Rights.vue";
import Goods from "../components/Goods/Goods.vue";
import Add from "../components/Goods/Add.vue";
import Params from "../components/Goods/Params.vue";
import Categories from "../components/Goods/Categories.vue";
import Orders from "../components/Orders/Orders.vue";
import Reports from "../components/Reports/Reports.vue";

Vue.use(VueRouter);

const routes = [
  { path: "/", redirect: "/login" },
  { path: "/login", component: Login },
  {
    path: "/home",
    component: Home,
    redirect: "/welcome",
    children: [
      { path: "/welcome", component: Welcome },
      { path: "/users", component: Users },
      { path: "/roles", component: Roles },
      { path: "/rights", component: Rights },
      { path: "/goods", component: Goods },
      { path: "/goods/add", component: Add },
      { path: "/params", component: Params },
      { path: "/reports", component: Reports },
      { path: "/orders", component: Orders },
      { path: "/categories", component: Categories }
    ]
  }
];

const router = new VueRouter({
  routes
});

// ?为路由对象挂载“路由导航守卫”
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  if (to.path === "/login") return next();
  const tokenStr = window.sessionStorage.getItem("token");
  if (!tokenStr) return next("/login");
  next();
});

export default router;
